Photon antibunching in single-walled carbon nanotubes at telecommunication wavelengths and room temperature
Photon antibunching in single-walled carbon nanotubes at telecommunication wavelengths and room temperature
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DOI：
10.1063/1.4915618
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发表时间：
2015-03-16
影响因子：
4
通讯作者：
Maki, Hideyuki
中科院分区：
文献类型：
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作者：
Endo, Takumi;Ishi-Hayase, Junko;Maki, Hideyuki
我们研究了单个空气悬浮单壁碳纳米管（SWNTs）的光致发光从6到300 K。时间分辨和反聚束测量的电信波长范围内进行了使用超导单光子探测器。我们检测到温和的温度无关的反聚束行为在整个温度范围内的研究。为了研究激子动力学，这是负责的反聚束行为，我们测量了激发功率和温度依赖的光致发光光谱和寿命衰减曲线。这些测量表明，激子限制效应，这可能是由高介电无定形碳周围的单壁碳纳米管。这些结果表明，单壁碳纳米管是在通信波长范围内和室温下工作的量子通信技术中的光源的良好候选者。(C)2015 AIP Publishing LLC.
We investigated the photoluminescence of individual air-suspended single-walled carbon nanotubes (SWNTs) from 6 to 300K. Time-resolved and antibunching measurements over the telecommunication wavelength range were performed using a superconducting single-photon detector. We detected moderate temperature independent antibunching behavior over the whole temperature range studied. To investigate the exciton dynamics, which is responsible for the antibunching behavior, we measured excitation-power and temperature dependence of the photoluminescence spectra and lifetime decay curves. These measurements suggested an exciton confinement effect that is likely caused by high-dielectric amorphous carbon surrounding the SWNTs. These results indicate that SWNTs are good candidates for light sources in quantum communication technologies operating in the telecommunication wavelength range and at room temperature. (C) 2015 AIP Publishing LLC.